3D Printing of Thermoplastic Elastomers: Role of the Chemical Composition and Printing Parameters in the Production of Parts with Controlled Energy Absorption and Damping Capacity
| Autor: | Sara Catherine Reyburn Valés, Ángel Marcos-Fernández, Juan Rodríguez-Hernández, Marina León-Calero |
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| Přispěvatelé: | Ministerio de Economía y Competitividad (España), Consejo Superior de Investigaciones Científicas (España), Comunidad de Madrid |
| Rok vydání: | 2021 |
| Předmět: |
thermoplastic elastomers
Materials science Thermoplastic Polymers and Plastics damping capacity Organic chemistry 3D printing Fused deposition modeling mechanical properties Article law.invention Damping capacity QD241-441 polymer characterization law Ultimate tensile strength Honeycomb energy absorption Composite material Thermoplastic elastomer Thermoplastic elastomers chemistry.chemical_classification fused deposition modeling business.industry Polymer characterization General Chemistry Manufacturing cost chemistry Energy absorption business |
| Zdroj: | Polymers Volume 13 Issue 20 Digital.CSIC. Repositorio Institucional del CSIC instname Polymers, Vol 13, Iss 3551, p 3551 (2021) |
| ISSN: | 2073-4360 |
| DOI: | 10.3390/polym13203551 |
| Popis: | Additive manufacturing (AM) is a disruptive technology that enables one to manufacture complex structures reducing both time and manufacturing cost. Among the materials commonly used for AM, thermoplastic elastomers (TPE) are of high interest due to their energy absorption capacity, energy efficiency, cushion factor or damping capacity. Previous investigations have exclusively focused on the optimization of the printing parameters of commercial TPE filaments and the structures to analyse the mechanical properties of the 3D printed parts. In the present paper, the chemical, thermal and mechanical properties for a wide range of commercial thermoplastic polyurethanes (TPU) filaments were investigated. For this purpose, TGA, DSC, 1H-NMR and filament tensile strength experiments were carried out in order to determine the materials characteristics. In addition, compression tests have been carried out to tailor the mechanical properties depending on the 3D printing parameters such as: infill density (10, 20, 50, 80 and 100%) and infill pattern (gyroid, honeycomb and grid). The compression tests were also employed to calculate the specific energy absorption (SEA) and specific damping capacity (SDC) of the materials in order to establish the role of the chemical composition and the geometrical characteristics (infill density and type of infill pattern) on the final properties of the printed part. As a result, optimal SEA and SDC performances were obtained for a honeycomb pattern at a 50% of infill density. This research was funded by Spanish Ministry of Science and Innovation (MINECO) through the research projects MAT2017-87204-R, by CSIC through the intramural project 20190E004 and by Comunidad de Madrid through the Industrial Doctorate program (IND2018/IND-9503) |
| Databáze: | OpenAIRE |
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